Unlock instant, AI-driven research and patent intelligence for your innovation.

Transmission device, reception device, broadcast signal processing method, and broadcast receiver

a technology of transmission device and reception device, which is applied in the direction of satellite broadcast receiving, broadcast receiving circuit, broadcast specific applications, etc., can solve the problems of installation labor. , to achieve the effect of reducing installation labor, and increasing the cost of signal cable materials

Active Publication Date: 2017-12-28
FUNAI ELECTRIC CO LTD
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a transmission device, a broadcast signal processing method, and a reception device and broadcast receiver that can distribute multiple broadcast signals using a single signal cable. This simplifies the distribution system, reduces cost, and saves space. Additionally, the invention utilizes polarization division multiplexing to minimize interference and disturbance.

Problems solved by technology

However, the following problems have been discovered with prior art.
When a plurality of different signal cables are used for broadcast signals, this drives up the cost for signal cable materials and their installation labor.
Furthermore, the plurality of signal cables also take up more space when installed.
The use of polarization division multiplexing complicates system design because of the need for dealing with image signals that are generated during frequency conversion or mixing and the need to avoid interference.
Thus, the signals are susceptible to interfering waves that come from the outside (hereinafter also referred to as disturbance).

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Transmission device, reception device, broadcast signal processing method, and broadcast receiver
  • Transmission device, reception device, broadcast signal processing method, and broadcast receiver
  • Transmission device, reception device, broadcast signal processing method, and broadcast receiver

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0026]A broadcast signal processing device 100 in accordance with a first embodiment will be described referring through FIGS. 1 to 4B. The broadcast signal processing device 100 is a device that performs signal processing for using a single signal cable to distribute a plurality of broadcast signals that have been separated by a compatible antenna from a broadcast wave that has undergone polarization division multiplexing. The broadcast signal processing device 100 is configured such that a plurality of broadcast signals of the same frequency band but different polarization are multiplexed in digital data format, and transmitted from a receiving antenna to a broadcast receiver. Here, the broadcast signals with different polarization are an example of a plurality of analog signals of different polarity.

[0027]FIG. 1 is a block diagram of an example of the functional configuration of the broadcast signal processing device 100. FIG. 1 shows the broadcast signal processing device 100, a...

second embodiment

[0068]Referring now to FIGS. 5A and 5B, a broadcast signal processing device 100 in accordance with a second embodiment will be described. The broadcast signal processing device 100 in accordance with the second embodiment is basically identical to the broadcast signal processing device 100 in accordance with the first embodiment, except that the broadcast signal processing device 100 in accordance with the second embodiment additionally has a plurality of frequency converters 121 and 122 for down-converting a plurality of broadcast signals. In the following description, the parts of the second embodiment that are identical or similar to the parts of the first embodiment will be given the same reference numerals as the parts of the first embodiment, and will not be described again for the sake of brevity. The description will focus on the part that is added in the second embodiment.

[0069]FIG. 5A is a block diagram of an example of the functional configuration of main components 101a...

third embodiment

[0078]Referring now to FIGS. 6A to 7, a broadcast signal processing device 100 in accordance with a third embodiment will be described. The broadcast signal processing device 100 in accordance with the third embodiment is basically identical to the broadcast signal processing device 100 in accordance with the first embodiment, except that the broad cast signal processing device 100 in accordance with the third embodiment has a plurality of filters 111a, 111b, 112a, and 112b, a plurality of frequency converters 121a, 121b, 122a, and 122b, and a plurality of A / D converters 131a, 131b, 132a, and 132b. The filters 111a, 111b, 112a, and 112b are provided for subjecting each of a plurality of broadcast signals to frequency division. The frequency converters 121a, 121b, 122a, and 122b are provided for down-converting the component signals after frequency division. In the following description, the parts of the third embodiment that are identical or similar to the parts of the first embodim...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A transmission device includes a first converter, a second converter, a generation component, and a transmitter. The first converter converts a first analog signal, which is a broadcast signal of a specific polarity, into a first digital signal. The second converter converts a second analog signal, which is a broadcast signal whose polarity is different from the specific polarity, into a second digital signal. The generation component generates a third digital signal that includes information of the first and second digital signals. The transmitter transmits the third digital signal generated by the generation component.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to Japanese Patent Application No. 2016-126856 filed on Jun. 27, 2016. The entire disclosure of Japanese Patent Application No. 2016-126856 is hereby incorporated herein by reference.BACKGROUNDField of the Invention[0002]The present invention generally relates to a transmission device, a reception device, a broadcast signal processing method, and a broadcast receiver.Background Information[0003]In an attempt to utilize radio waves more efficiently, polarization division multiplexing, in which a plurality of broadcast waves of different polarization with overlapping frequency bands are multiplexed and transmitted, has been studied in satellite broadcast systems, for example. A broadcast wave that has undergone polarization division multiplexing is separated by a receiving antenna into broadcast signals by polarization before being outputted.[0004]Since the frequency bands are overlapped in the separated bro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04B1/04
CPCH04B1/04H04B1/16H04H20/63H04H40/90H04N7/20H04N5/44
Inventor SUZUKA, TAKUYA
Owner FUNAI ELECTRIC CO LTD